Java 16 - 序列化与反序列化

import java.io.*;

public class Test {
    static class A implements Serializable {
        private int x;
        private String y;

        A(int x, String y) {
            this.x = x;
            this.y = y;
        }

        @Override
        public String toString() {
            return "x = " + x + " " + "y = " + y;
        }
    }
    public static void main(String[] args) throws IOException, ClassNotFoundException {
        A a1 = new A(123, "abc");
        String objectFile = "./a1";
        ObjectOutputStream objectOutputStream = new ObjectOutputStream(new FileOutputStream(objectFile));
        objectOutputStream.writeObject(a1);
        objectOutputStream.close();

        ObjectInputStream objectInputStream = new ObjectInputStream(new FileInputStream(objectFile));
        A a2 = (A) objectInputStream.readObject();
        objectInputStream.close();
        System.out.println(a2);
    }

}